YPT6
S. cerevisiae
Rab family GTPase YPT6
What the model saw
Gene: YPT6 Organism: Saccharomyces cerevisiae Known functions: Rab family GTPase YPT6. GTP binding. GTPase activity. protein binding.
View unredacted entry
Rab family GTPase YPT6. GTP binding. GTPase activity. protein binding.
Solver output
YPT6 is the yeast ortholog of mammalian RAB6, a Rab family small GTPase that regulates retrograde vesicular trafficking from endosomes and the Golgi apparatus back to the trans-Golgi network (TGN). By cycling between GTP-bound (active) and GDP-bound (inactive) states, YPT6 coordinates SNARE complex assembly and vesicle tethering at the TGN, ensuring proper sorting and delivery of proteins through the secretory and endolysosomal pathways. Functional retrograde trafficking is essential for maintaining proteostasis, as it recycles receptors, sorting machinery, and lysosomal/vacuolar hydrolases needed for protein quality control and autophagy flux. Disruption of Rab6/YPT6-mediated trafficking impairs vacuolar function and cargo degradation, which is linked to accelerated aging in yeast. Proper Golgi-to-vacuole trafficking also supports the clearance of damaged or misfolded proteins, a key pro-longevity mechanism in S. cerevisiae.
GenAge curators classify each gene's normal function as promoting (Pro-Longevity) or opposing (Anti-Longevity) longevity, based on synthesis across studies. Loss-of-function effects can vary from this depending on the manipulation.
Advisor judgment
The model predicted YPT6 as pro_longevity, but the ground truth is anti_longevity. The model reasoned that YPT6 supports proteostasis and vacuolar function, concluding it would be pro-longevity. However, since YPT6 is anti_longevity, this means its deletion or loss likely extends lifespan, suggesting that YPT6 activity is detrimental to longevity (perhaps by promoting certain trafficking events that accelerate aging). The model's mechanistic reasoning about retrograde trafficking and proteostasis is plausible in general but leads to the wrong conclusion. The model had moderate confidence (0.62) but was still wrong on both the answer and the mechanistic interpretation of how YPT6 affects aging.
Raw API responses
solver
{
"reasoning": "YPT6 is the yeast ortholog of mammalian RAB6, a Rab family small GTPase that regulates retrograde vesicular trafficking from endosomes and the Golgi apparatus back to the trans-Golgi network (TGN). By cycling between GTP-bound (active) and GDP-bound (inactive) states, YPT6 coordinates SNARE complex assembly and vesicle tethering at the TGN, ensuring proper sorting and delivery of proteins through the secretory and endolysosomal pathways. Functional retrograde trafficking is essential for maintaining proteostasis, as it recycles receptors, sorting machinery, and lysosomal/vacuolar hydrolases needed for protein quality control and autophagy flux. Disruption of Rab6/YPT6-mediated trafficking impairs vacuolar function and cargo degradation, which is linked to accelerated aging in yeast. Proper Golgi-to-vacuole trafficking also supports the clearance of damaged or misfolded proteins, a key pro-longevity mechanism in S. cerevisiae.",
"confidence": 0.62,
"key_pathways": [
"retrograde Golgi-to-TGN vesicular trafficking",
"endolysosomal/vacuolar protein sorting",
"proteostasis and protein quality control"
],
"mechanism_class": "loss_of_proteostasis",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted YPT6 as pro_longevity, but the ground truth is anti_longevity. The model reasoned that YPT6 supports proteostasis and vacuolar function, concluding it would be pro-longevity. However, since YPT6 is anti_longevity, this means its deletion or loss likely extends lifespan, suggesting that YPT6 activity is detrimental to longevity (perhaps by promoting certain trafficking events that accelerate aging). The model's mechanistic reasoning about retrograde trafficking and proteostasis is plausible in general but leads to the wrong conclusion. The model had moderate confidence (0.62) but was still wrong on both the answer and the mechanistic interpretation of how YPT6 affects aging.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}